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Questions and Answers

What term is used to refer to pre-trained language models of significant size?

  • Statistical language models
  • Compact language models
  • Standard language models
  • Large language models (correct)
  • Which technological advancement has significantly impacted the progress of large language models?

  • Improvement in hardware specifications
  • Launch of traditional AI systems
  • Development of ChatGPT (correct)
  • Introduction of simpler language algorithms
  • Which of the following aspects is NOT mentioned as a major focus in the survey of large language models?

  • Adaptation tuning
  • Data generation (correct)
  • Capacity evaluation
  • Pre-training
  • What does the technical evolution of large language models aim to revolutionize?

    <p>The development and use of AI algorithms (A)</p> Signup and view all the answers

    What is one of the key components the survey addresses regarding large language models?

    <p>Pre-training strategies (C)</p> Signup and view all the answers

    In what way have large language models (LLMs) drawn attention from society?

    <p>As a result of the performance of ChatGPT (D)</p> Signup and view all the answers

    What is an emerging area of interest in research regarding large language models?

    <p>Emergent abilities (D)</p> Signup and view all the answers

    What type of resource does the survey provide for developing large language models?

    <p>An up-to-date review of the literature (A)</p> Signup and view all the answers

    What are n-gram language models primarily based on?

    <p>The Markov assumption (A)</p> Signup and view all the answers

    What has been a longstanding research challenge in enhancing language models?

    <p>Achieving human-like understanding and communication (A)</p> Signup and view all the answers

    In which decade did statistical learning methods for language models begin to rise?

    <p>1990s (A)</p> Signup and view all the answers

    What is a limitation of SLMs in their current form?

    <p>They cannot inherently grasp human communication abilities. (A)</p> Signup and view all the answers

    Which of the following best describes SLMs with a fixed context length?

    <p>They are referred to as n-gram language models. (A)</p> Signup and view all the answers

    SLMs are widely applied to improve performance in which of the following areas?

    <p>Information retrieval and natural language processing (B)</p> Signup and view all the answers

    What aspect of human capability is primarily denied to machines without advanced algorithms?

    <p>Understanding and communicating in human language (D)</p> Signup and view all the answers

    What are common examples of n-gram language models?

    <p>Bigram and trigram models (C)</p> Signup and view all the answers

    What does L(·) represent in the equations provided?

    <p>Cross entropy loss in nats (A)</p> Signup and view all the answers

    What two parts can the language modeling loss be decomposed into?

    <p>Irreducible loss and reducible loss (C)</p> Signup and view all the answers

    Which section summarizes available resources for developing LLMs?

    <p>Section 3 (B)</p> Signup and view all the answers

    What does the symbol Dc represent in the context provided?

    <p>Total data capacity (C)</p> Signup and view all the answers

    In the overview, what is identified as influencing model performance?

    <p>Data size, model size, and training compute (B)</p> Signup and view all the answers

    What is the primary focus of Section 8 in the document?

    <p>Prompt design practical guide (A)</p> Signup and view all the answers

    What study is referenced regarding the decomposition of language modeling loss?

    <p>A follow-up study from OpenAI (C)</p> Signup and view all the answers

    What influences were analyzed in relation to model performance?

    <p>Data sizes, model sizes, and training compute (D)</p> Signup and view all the answers

    What does GPT-2 primarily aim to be according to its intended design?

    <p>An unsupervised multitask learner (D)</p> Signup and view all the answers

    Which of the following statements is true about GPT-2's performance?

    <p>Its performance is inferior compared to supervised fine-tuning methods. (C)</p> Signup and view all the answers

    What does 'Adaptation' refer to in the context of large language models according to the content provided?

    <p>Subsequent fine-tuning processes (A)</p> Signup and view all the answers

    In the context of large language models, what does 'Closed Source' indicate?

    <p>The model's checkpoints are not publicly available. (D)</p> Signup and view all the answers

    What major improvement does GPT-4 demonstrate compared to GPT-3.5?

    <p>Stronger capacities in solving complex tasks (B)</p> Signup and view all the answers

    What foundational reinforcement learning algorithm is mentioned as crucial for learning from human preferences?

    <p>Proximal Policy Optimization (C)</p> Signup and view all the answers

    What is the primary focus of fine-tuning for GPT-2?

    <p>Enhancing performance in downstream tasks (B)</p> Signup and view all the answers

    Which of the following is NOT mentioned as a category for evaluation of large language models?

    <p>Temporal assessment (C)</p> Signup and view all the answers

    Which model was fine-tuned in January 2020 using reinforcement learning from human feedback principles?

    <p>GPT-2 (C)</p> Signup and view all the answers

    What is indicated by the term 'Release Time' in the statistics of large language models?

    <p>The date when the model paper was released (A)</p> Signup and view all the answers

    How did OpenAI improve the safety features of GPT-4?

    <p>Through a six-month iterative alignment process (D)</p> Signup and view all the answers

    Which of the following resources is mentioned as a factor in the statistics of large language models?

    <p>Pre-training data scale (C)</p> Signup and view all the answers

    What mechanism was introduced to reduce harmful or toxic content generated by LLMs?

    <p>Red teaming (B)</p> Signup and view all the answers

    What does the RLHF training method specifically aim to improve in models like GPT-4?

    <p>The alignment of models with human preferences (A)</p> Signup and view all the answers

    What is described as a key aspect of GPT-4's development regarding deployment safety?

    <p>Mechanism prediction for final performance (B)</p> Signup and view all the answers

    Which term is emphasized less frequently in OpenAI's documentation compared to supervised fine-tuning?

    <p>Instruction tuning (C)</p> Signup and view all the answers

    What is the primary focus of the authors associated with Gaoling School of Artificial Intelligence?

    <p>Introducing the concept of distributed representation of words (A)</p> Signup and view all the answers

    What is the primary function built by the authors based on distributed word vectors?

    <p>Word prediction function conditioned on context features (B)</p> Signup and view all the answers

    Which institution is Jian-Yun Nie affiliated with?

    <p>DIRO, Université de Montréal (B)</p> Signup and view all the answers

    What kind of approach was developed by the authors for text data?

    <p>A general neural network approach (A)</p> Signup and view all the answers

    What is the main purpose of reserving copyrights for the figures and tables in the paper?

    <p>To prevent plagiarism and unauthorized reproduction (B)</p> Signup and view all the answers

    When did the trend for papers containing the keyphrase 'large language model' begin?

    <p>October 2019 (B)</p> Signup and view all the answers

    What percentage of arXiv papers discussed 'language model' since June 2018?

    <p>25% (A)</p> Signup and view all the answers

    What feature aggregates the context for the word prediction function?

    <p>Distributed word vectors (A)</p> Signup and view all the answers

    What are the authors of this survey primarily developing?

    <p>A unified, end-to-end solution for text data (C)</p> Signup and view all the answers

    What must be done for the publication purpose of figures or tables used from this survey?

    <p>Obtain official permission from the authors (A)</p> Signup and view all the answers

    What is a requirement for utilizing the materials presented in this survey?

    <p>Official permission from the authors (A)</p> Signup and view all the answers

    Which of the following best describes 'distributed representation of words'?

    <p>A technique for representing words as high-dimensional vectors (D)</p> Signup and view all the answers

    What is a notable trend depicted in the figure regarding language models?

    <p>Both phrases 'language model' and 'large language model' have increased interest (C)</p> Signup and view all the answers

    Which method is not mentioned as an approach for building the word prediction function?

    <p>Using classical machine learning techniques (D)</p> Signup and view all the answers

    Flashcards

    Statistical Language Models (SLMs)

    Language models built using statistical learning methods from the 1990s.

    Markov assumption

    A principle used in SLMs to predict the next word based on recent words.

    n-gram language models

    Statistical language models with a fixed context length (n).

    bigram language model

    A type of n-gram model using a context of 2 preceding words (n=2).

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    trigram language model

    A type of n-gram model using a context of 3 preceding words (n=3).

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    human language understanding & communication

    A complex skill that machines struggle with without advanced AI algorithms.

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    information retrieval (IR)

    A field where SLMs can improve task performance.

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    natural language processing (NLP)

    A field where SLMs can enhance task performance ,

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    Large Language Models (LLMs)

    Large language models are pre-trained models with a significant number of parameters, typically in the tens or hundreds of billions.

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    Pre-training

    A crucial step for LLM training, involving training the model on a large text dataset to learn general language patterns.

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    Adaptation Tuning

    Adjusting a pre-trained LLM to perform specific tasks or match a certain style.

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    Utilization (LLMs)

    Using a pre-trained or tuned LLM to fulfill specific tasks or applications. Using a model to do something.

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    Capacity Evaluation

    Assessing the capabilities and limitations of an LLM.

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    AI Chatbot (e.g., ChatGPT)

    An application using an LLM to conduct conversations in a human-like way.

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    Emergent Abilities

    Skills or capabilities that a language model displays unexpectedly and which were not explicitly programmed.

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    Cross entropy loss

    A measure of the difference between two probability distributions, used in evaluating the performance of language models.

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    Irreducible loss

    The inherent uncertainty in the data itself; the entropy of the true data distribution.

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    Reducible loss

    The remaining difference between the model's predictions and the true data distribution.

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    Language modeling loss

    Loss function used to evaluate the performance of a language model

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    Scaling law

    Relationship between model performance and factors such as data size, model size, and training compute.

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    Chinchilla scaling law

    A specific example of scaling law, relating model size, data size, and compute.

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    L(D)

    Cross entropy loss related to data D, denoted in nats.

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    L(C)

    Cross entropy loss related to data C in nats.

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    GPT-2's performance

    GPT-2, while intended as an unsupervised multitask learner, performs less well than supervised tuning methods.

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    Fine-tuning in downstream tasks

    GPT-2's performance is improved by adjusting it for specific tasks, especially dialogue.

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    Model size and GPT-2

    GPT-2's relatively small size makes it often fine-tuned for specific tasks.

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    Pre-training data for LLMs

    The massive dataset used to train foundation models for tasks.

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    Hardware resource costs of LLMs

    The computational resources needed to train and run LLMs.

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    Publicly Available LLMs

    LLMs whose model checkpoints are publicly accessible.

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    Instruction Tuning (IT)

    A method of fine-tuning large language models using instruction.

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    Distributed Representation of Words

    A method of representing words as vectors, where similar words have similar vectors in a high-dimensional space.

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    Word Prediction Function

    A function that predicts the next word in a sequence based on the context of preceding words.

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    Aggregated Context Features

    Combined features of the context surrounding a word, used for predicting the next word.

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    Neural Network Approach

    A method using interconnected nodes to learn and make predictions.

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    Unified, End-to-End Solution

    A complete system that learns from the data and solves a problem without intermediary steps.

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    Language Model

    A statistical model that predicts the probability of a sequence of words.

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    Large Language Model

    A more complex language model handling vast amounts of text data for more sophisticated processing, like generation.

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    arXiv papers

    Scientific articles submitted to the arXiv preprint server.

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    Cumulative Numbers

    A running total of something over a period of time. Tracking an increase.

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    Keyphrases

    Important words or short phrases to describe the topic of a text.

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    Gaoling School of Artificial Intelligence

    An institution specializing in Artificial Intelligence.

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    School of Information

    An academic department focused on information technology.

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    Renmin University of China

    A university in China.

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    DIRO (Université de Montréal)

    A research department in Montreal University.

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    Distributed Word Vectors

    Word representations as vectors in a high-dimensional space.

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    GPT-4 vs. GPT-3.5

    GPT-4 demonstrates significant improvement over GPT-3.5 in handling various tasks like complex problem-solving. It showcases a marked leap in performance across numerous evaluation benchmarks.

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    How was GPT-4 evaluated?

    GPT-4 was assessed using qualitative tests involving human-generated problems that covered a wide range of complex tasks, including those posing challenges like reasoning, knowledge, planning, and creativity.

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    GPT-4 Improvement: Human Preference Alignment

    GPT-4 leverages a method known as Reinforcement Learning from Human Feedback (RLHF) to align its responses with human preferences. This helps it generate safer outputs, especially in response to malicious or provocative queries.

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    GPT-4 Safety Measures

    GPT-4 incorporates safety mechanisms like "red teaming" to reduce the risk of generating harmful or toxic content. This emphasizes the importance of responsible development and deployment of LLMs.

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    Predictable Scaling in GPT-4

    GPT-4 utilizes "predictable scaling" to accurately forecast its final performance based on early training observations. This helps ensure efficient development and deployment of large language models.

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    RLHF: Three-Stage Process

    InstructGPT, a predecessor to GPT-4, utilizes a three-stage reinforcement learning from human feedback (RLHF) algorithm. This approach fine-tunes language models to better understand and follow human instructions.

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    Instruction Tuning

    GPT-4 benefits from a process called "instruction tuning", which involves supervised fine-tuning on human demonstrations. This helps improve the model's ability to follow instructions effectively.

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    Benefits of RLHF

    The RLHF algorithm helps minimize the generation of harmful or toxic content by LLMs. This is fundamental for the safe and practical deployment of LLMs.

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    Study Notes

    Large Language Models Survey

    • Large language models (LLMs) are pre-trained Transformer models with hundreds of billions of parameters trained on massive text corpora.
    • LLMs excel at various natural language processing (NLP) tasks, including language understanding, generation, and few-shot learning.
    • LLMs show "emergent abilities" – capabilities not present in smaller models – when scaled.
    • Key aspects of LLMs include pre-training, adaptation tuning (e.g., LoRA), utilization (e.g., prompting strategies), and capacity evaluation.
    • Scaling laws, like Kaplan's and Chinchilla's, describe relationships between model size, data size, and compute in large language models.
    • Emergent abilities of LLMs include in-context learning (e.g., Few-shot learning), instruction following, and step-by-step reasoning.

    Pre-training

    • Pre-training often involves language modeling, predicting the next word in a sequence from a large dataset.
    • Data sources for pre-training include web pages, books, and code repositories.
    • Data is cleaned by filtering out low quality data or duplicate data using classifiers and heuristics.
    • Data scheduling (data mixture, order) is crucial for efficient pre-training.
    • Model architecture, normalization methods, activation functions, and position embeddings impact pre-training effectiveness.

    Model Adaptation

    • Instruction Tuning: Fine-tuning a pre-trained model on a dataset of instructions and expected outputs.
    • Prompts are used to elicit the ability for desired task or function.
    • Data quality (diversity, scale) and prompt design (complexity, formatting) significantly influence tuning outcomes.
    • Reward Model Training: Training a reward model to judge the quality of a large language model’s output for fine-tuning/reinforcement learning.
    • Parameter Efficient Fine Tuning (PEFT): Techniques like LoRA are used to adapt large language models to downstream tasks while significantly reducing the need for computation resource.

    Model Utilization

    • Prompting is the main way to utilize LLMs for varied tasks.
    • Prompt engineering (designing specific instructions/prompts) influences LLM output quality.
    • Key prompt components are task description, input data, contextual information, and prompt style.
    • In-context learning (ICL) and Chain-of-Thought (CoT) prompting are key methods.
    • Planning is an enhanced approach for more complex tasks, structuring the tasks into sub-tasks and plans.
    • Different prompting styles (ICL, CoT, planning) offer varying advantages in different scenarios.

    Model Evaluation

    • Comprehensive benchmarks (MMLU, Big-bench, HELM), human-based evaluations, and model-based evaluations are necessary.
    • Evaluation datasets focus on various abilities, including language generation, knowledge utilization, complex reasoning, and human alignment.
    • Evaluation considers metrics like accuracy, faithfulness, and fluency.

    Advanced Topics

    • Long-Context Modeling: Improving models' capacity to process lengthy sequences of text.
    • Efficient Model Adaptation: Techniques to improve training/inference efficiency (e.g., quantization, pruning).
    • LLM-Empowered Agents: Agents designed with LLMs as core component are explored to handle complex tasks and interactions with an environment.
    • Retrieval-Augmented Generation (RAG): Using external knowledge sources to improve LLM responses for specific prompts, potentially reducing the need for re-training.
    • Hallucination Mitigation: Addressing issues of unreliable information generation by LLMs.
    • Data Scheduling, Data Quality, and Data Mixture are also crucial factors of LLM success and design.

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